I found these things today at a local thrift store and couldn't resist that classic charm. They came with the original manual, a product catalog, a bottle of record cleaner, and a nice faux leather case.
The sound is not bad. The only comparators I have are my Sennheiser HD555 and a friend's Audio Technica M50s, so here goes: They aren't heavy on the bass, but it is there. The bass I'd say is close to the HD555s. The highs are a bit muddy and lay behind the mids. They barely leak sound; you really have to listen for the leakage. I'm powering them with an old Pioneer VSX-D409 and they sound fine. I tried plugging them into my phone just for fun and actually thought they sounded a little better on there than through the amp. With an 8ohm resistance, it's not really that surprising. I need to EQ them as best I can and I think this will be well worth the $10 I spent.